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ext/intl: Fix for the issue where strlen could potentially become negative (#18477)

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This commit is contained in:
Saki Takamachi
2025-05-02 15:10:16 +09:00
committed by GitHub
parent dd5733202d
commit f1d259a07b
1 changed files with 4 additions and 0 deletions
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4
ext/intl/grapheme/grapheme_string.c
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@@ -994,6 +994,10 @@ PHP_FUNCTION(grapheme_levenshtein)
int32_t strlen_1, strlen_2;
strlen_1 = grapheme_split_string(ustring1, ustring1_len, NULL, 0);
strlen_2 = grapheme_split_string(ustring2, ustring2_len, NULL, 0);
if (UNEXPECTED(strlen_1 < 0 || strlen_2 < 0)) {
RETVAL_FALSE;
goto out_ustring2;
}
if (strlen_1 == 0) {
RETVAL_LONG(strlen_2 * cost_ins);